3,if your main unit firmware is old, you must link main unit to car then updata firmware!

note:1,if your computer first install ds150e software,you must install usb driver(main unit link to computer to install).usb driver is in "DS150E 2014.3 CAR\Driver"2,if you can't run main.exe.please install Netframe3.53,if your main unit firmware is old, you must link main unit to car then updata firmware!